* {
    margin: 0;
    padding: 0;
}


a {
    text-decoration: none;
}

li {
    list-style-type: none;
}

html, body {
    width: 100%;
    height: 100%;
}

.header {
    height: 50px;
    background-color: rgb(43, 43, 43);
    display: flex;
    align-items: center;
    justify-content: space-between;
    color: white;
}

.header-left {
    width: 60%;
    height: 50px;

}

.header-right {
    width: 20%;
    height: 50px;

}

.header .item {
    float: right;
    width: 150px;
    height: 50px;
    line-height: 50px;
    text-align: center;
    color: white;
}

.header a:hover {
    color: orange;
    cursor: pointer;
}
.search{
    margin-top: 30px;
    border:none;
    background-color: rgb(203, 198, 198);
    height:35px ;
    display: flex;
    padding-left: 300px;
}
.YMselect{
    border: none;
    margin-left: 100px;
    background-color: rgb(203, 198, 198);
    height:35px ;
    line-height: 35px;
}

.search_btn {
    height: 34px;
    width: 100px;
    border: none;
    border-radius: 8px;
    margin-left: 100px;
    background-color: rgb(177, 171, 171);
}
.search_btn:hover{
    color: #ffffff;
    background-color: #525050;
    cursor: pointer;
}

.my_iframe {
    width: 100%;
    height: 600px;

}
body{
    overflow: hidden;
}